ground frost

British

noun

the condition resulting from a temperature reading of 0°C or below on a thermometer in contact with a grass surface

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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ground frost

Gardeners beware that some rural ground frost is still likely too.

From BBC ● May 11, 2026

Wednesday will have a colder start with patchy ground frost more widespread.

From BBC ● May 4, 2026

This means we are seeing less snow and fewer frosts - in fact we now get around four weeks less ground frost than we did half a century ago.

From BBC ● Feb. 26, 2026

And into Monday morning there could be a widespread ground frost as temperatures fall close to freezing.

From BBC ● Nov. 11, 2024

At Kensington Palace the ground frost registered 9 deg.

From Punch, or the London Charivari, Volume 159, December 22, 1920 by Sir Owen Seaman

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023